<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>05-自行车案例</title>
  <style>
    div{
      width: 130px;
      height: 130px;
      margin: 0 auto;
      background-image: url(../../images/bike.png);
      margin-top: 200px;
      animation: bike 1s steps(31) infinite;
    }
    @keyframes bike {
      0%{

      }
      100%{
        background-position: 0 -4030px;
      }
      
    }



  </style>
</head>
<body>
  <div></div>
</body>
</html>